Curable resin composition, cured product, diffractive optical element, and multilayer diffractive optical element

Abstract

Provide are a curable resin composition containing ITO particles, in which a cured product obtained from the curable resin composition can exhibit high transmittance over a visible light to shortwave infrared wavelength region while maintaining a wavelength dependence of a desired refractive index; a cured product formed of the curable resin composition; and a diffractive optical element and a multilayer diffractive optical element. A curable resin composition includes particles which have a core-shell structure, in which a core portion is composed of indium tin oxide, a monofunctional or higher (meth)acrylate compound, and a dispersant; a cured product formed of the curable resin composition; and a diffractive optical element and a multilayer diffractive optical element.

Dependencies are inferred from the claim text.